HYDRAULIC PIPE EXPANDING COLLET CHUCK

HYDRAULIC PIPE EXPANDING COLLET CHUCK
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HYDRAULIC PIPE EXPANDING COLLET CHUCK

A Hydraulic Pipe Expanding Collet Chuck is a precision internal clamping workholding device that grips pipes, tubes, bushes, and hollow components from the inside diameter using hydraulic actuation. It provides uniform, distortion-free clamping with high concentricity and repeatability, making it ideal for thin-wall and precision pipe machining in CNC lathes, VMCs, SPMs, and automated production lines.

 
 

A Hydraulic Pipe Expanding Collet Chuck is a precision internal clamping (ID clamping) workholding device designed to grip pipes, tubes, bushes, and hollow components from the inside diameter using hydraulic force.
The collet expands uniformly inside the bore, providing distortion-free clamping, high concentricity, and excellent repeatability—especially critical for thin-wall and precision pipe machining.

This chuck is widely used in CNC lathes, VMCs, SPMs, and automation lines where external clamping is not possible or may deform the component.


Applications

Hydraulic Pipe Expanding Collet Chucks are used in:

  • CNC Turning of pipes & tubes
  • Thin-wall pipe machining
  • Bush, sleeve & hollow shaft machining
  • Automotive exhaust & tubular components
  • Hydraulic & pneumatic pipe assemblies
  • Precision boring, facing & OD turning
  • Mass production & automated setups

Key Features

  • Uniform 360° internal expansion
  • Distortion-free clamping for thin-wall pipes
  • High concentricity & repeat accuracy
  • Hydraulic actuation for consistent force
  • Fast loading & unloading (cycle time reduction)
  • Long life with hardened & ground segments
  • Suitable for high-speed CNC machining
  • Custom design as per pipe ID & length

Working Principle

Hydraulic pressure actuates an internal piston or draw mechanism, forcing the expanding collet segments outward.
This creates even radial pressure against the pipe’s inner surface, ensuring secure holding without marking or ovality.


Technical Specifications

  • Clamping Type: Internal (ID expanding)
  • Actuation: Hydraulic
  • Material: Alloy Steel / Tool Steel (EN31, EN24)
  • Hardness: 58–62 HRC (working parts)
  • Accuracy: ≤ 0.01 mm TIR
  • Expansion Range: As per pipe ID
  • Mounting: Spindle nose / back plate / flange
  • Customization: As per drawing or sample

Types of Hydraulic Expanding Collet Chucks

  • Standard Pipe Expanding Collet Chuck
  • Thin-Wall Pipe Expanding Chuck
  • Long-Length Pipe Expanding Chuck
  • Multi-step Expanding Collet Chuck
  • Custom Hydraulic Expanding Chuck

Advantages

  • Eliminates pipe deformation
  • Ensures true concentric machining
  • Improves surface finish & dimensional accuracy
  • Reduces rejection and rework
  • Ideal for automation & high-volume production

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PIPE EXPANDING COLLET CHUCK

The Pipe Expanding Collet Chuck is designed for precise internal gripping and expansion of pipes.
It provides uniform expansion for accurate forming and machining.
Constructed using high-strength alloy steel for long service life.
Ensures excellent concentricity and stable holding performance.
Reduces vibration and improves machining accuracy.
Suitable for CNC, automation, and pipe processing systems.
Compatible with a wide range of pipe sizes and materials.
Ideal for industries requiring precision pipe expansion and forming.

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